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Temperature
Regulators / Temperature Limiters 
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Bimetal
Cutouts
Types
R20/R22 are bimetal detectors and temperature regulators.
Types R30/R32 are temperature limiters (manual reset)
without trip free mechanism. The thermal response
works a bimetal snap element electrically connected
to the switch contact. The switch system is current
insensitive. The thermal switches react only to external
thermal effects. Double
contacts ensure high switch performance and long service
life. The housing, base, and the mounting brackets
are voltage-free(Standard version: base and mounting
brackets are aluminium-plated steel). Heat transfer
occurs directly through the metallic base via convection,
radiation and conduction in gaseous and solid media.
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| Applications
Temperature regulation,
temperature monitoring, temperature limiting and indication
in electric appliances and industrial equipment, machinery
and process engineering. Examples: Vacuum
cleaners Electrical house-Ironing machines hold appliances,
Cooking equipment, Electronic circuits, Dampers, Machinery,
Heat radiators, Process engineering, Hot water heaters,
Industrial, electric Coffee machines elements, Egg
boilers, Electrical components, Electric appliances
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| >
Technical Data (R 20 R 22
R 30 R 32) |
| ratings
\ control type |
R
20A
R 22A |
R
20F
R 22F |
R
30A
R 32A |
| function |
automoatic |
manual
1 |
| version |
normally
closeD (Code 2) |
normally
closed (Code 1) |
normally
closed (Code 2) |
VDE |
rated
current at 50 / 60 Hz (p.f. 0.95 / 0.6 ) |
10
A / 1.6 A (250 V) |
10
A / 1.6 A (250 V) |
16 A / 2.5
A (250 V) |
| switching
cycles |
100,000 |
100,000 |
1,000
|
| temperature
range Ta ( steps in 5 K ) |
30
°C ... 170 °C |
30
°C ... 160 °C |
30
°C ... 170 °C |
UL |
rated
current at 50 / 60 Hz ( p. f. 1.0 ) |
10
A (250 V) |
- |
10
A (250 V) |
| switching
cycles |
30,000 |
- |
1,000 |
| temperature
range Ta ( steps in 5 K ) |
10
A (250 V) |
- |
30
°C ... 160 °C |
| max.
current at 250V 50/60Hz (p.f. 0.95 ) |
16
A |
16
A |
| switching
cycles under max. current |
10,000 |
1,000 |
| tolerances |
standard:
±5 K (special: ± 3 K) |
| feature
of automatic action |
1.B,
2.B |
1.B,
2.B |
2.B |
| contact
resistance |
<
50 mΩ |
| hysteresis |
30
K ± 15 K 2 |
| degrees
of protection provided by enclosures ( EN 60529 ) |
IP00 |
| suitable
for use in protection class |
I,
II |
| approval |
VDE/ENEC |
EN
60730-1 / -2-9 |
| UL |
UL
873 |
| CSA |
C22.2
No. 24 3 |
- |
- |
| CQC |
GB14536.1-1998
/ GB14536.10-1996 4 |
1) maximum reset force
10N
2) at the Ta (upper and lower) limits the hysteresis
could deviate
3) R20A only
4) details on request |
| >
Standard Types |
| type |
nc |
no |
code |
illustration |
drawing
dimensions (mm) |
tech
description |
approvals |
R20 |
A |
F |
standard
dielectric strength
3,000 Vac |
 |
 |
terminals
6.3 x 0.8
housing thermosetting plastic
moving bracket, small
base of steel nickel-plated |
VDE,
UL, CSA |
R22 |
A |
F |
standard
dielectric strength
4,000 Vac |
 |
 |
terminals
6.3 x 0.8
housing thermosetting plastic
moving bracket, small
base of steel nickel-plated |
VDE,
UL |
R30 |
A |
|
G129
dielectric strength
3,000 Vac |
 |
 |
terminals
6.3 x 0.8
housing thermosetting plastic
moving bracket, small
base of steel nickel-plated
reset pin G129 |
VDE,
UL |
| R32 |
A |
|
G129
dielectric strength
4,000 Vac |
|
 |
terminals
6.3 x 0.8
housing thermosetting plastic
moving bracket, small
base of steel nickel-plated
reset pin G129 |
VDE,
UL |
|
R30,
R32 |
A |
|
G408
dielectric strength
3,000 / 4,000 Vac |
 |
 |
terminals
6.3 x 0.8
housing thermosetting plastic
moving bracket, small
base of steel nickel-plated
reset knob G408 |
VDE,
UL |
| >
Fixings |
| Code |
used
in type |
illustration |
drawing
dimensions (mm) |
tech
specification |
approvals |
B214 |
R20,
R22
R30, R32 |
 |
 |
moving
bracket, small |
VDE,
UL |
B250 |
R20,
R22
R30, R32 |
 |
 |
moving
bracket
standard
version |
VDE,
UL,
CSA 1 |
B401 |
R20,
R22
R30, R32 |
 |
 |
stud
of M5 x 6 brass |
VDE,
UL |
| >
Terminals |
| Code |
used
in type |
illustration |
drawing
dimensions (mm) |
tech
specification |
approvals |
A117 |
R20,
R22
R30, R32 |
 |
 |
terminals
6.3 x 0.8
standard version
brass nickel plated
Ta max. 140°C
>140°C steel nickel plated |
VDE,
UL,
CSA 1 |
A119 |
R20,
R22
R30, R32 |
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 |
terminals
6.3 x 0.8
brass nickel plated
Ta max. 140°C
>140°C steel nickel plated |
VDE,
UL,
CSA 1 |
A121 |
R20,
R22
R30, R32 |
 |
 |
solder
terminals
brass tinned
Ta max. 120°C
>120°C steel nickel plated |
VDE,
UL |
|
A122 |
R20,
R22
R30, R32 |
 |
 |
solder
terminals
brass tinned
Ta max. 120°C
>120°C steel nickel plated |
VDE,
UL |
A123 |
R20,
R22
|
 |
 |
PCB
terminals
German silver
Ta max. 140 °C |
VDE,
UL |
| >
Ordering & Marking Example |
| MIC
Ordering Example [ R20A12005A117B214
] |
| R20 |
A |
120 |
05 |
A117 |
B214 |
| type |
version |
temperature |
tolerance |
terminal
code |
fixing
code |
| Cantherm
Ordering Example [ R2012025A117B214
] standard version |
| R20 |
120 |
2 |
5 |
A117 |
B214 |
| type |
temperature |
normally
closed |
tolerance
+/-5°C |
terminals
.250"
quick on |
bracket
moving |
| Marking |
R20A
type
12005 response temperature
(120°C), tolerance (± 5K)
049E date of manufacture (April
2009), country (E = Spanien) |
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1/2"
Disc Bimetal Cutouts
Canadian Thermostats & Control Devices Ltd.